Discover our global study on nanoparticle emissions in 3D printing and P3D filter efficiency measurements.

Considering the chemical risks associated with 3D printing filaments, and to better understand and act regarding nanoparticle emissions, we provide you with a study conducted in 2021 in our Alveo3D laboratory. In this paper, we quantified the toxic and harmful nanoparticle emissions during FDM 3D printing.
This study can be downloaded at the bottom of the page.


  • In your opinion, is PLA truly safe?
  • Do you think that changing filaments during 3D printing is harmless?
  • What is the efficiency of the P3D filter based on the filaments used?
In this paper, we answer your questions according to:


  • A detailed protocol
  • The measurements conducted on different filaments: ABS, PLA, and PETG
  • The P3D filtration efficiency
  • The risks when changing filament
  • Our conclusions and recommendations to protect yourselves from these toxic emissions
With our measurement bench, unique in Europe and specifically designed to study nanoparticle emissions, we imagined and created several series of tests in our Alveo3D facilities. Our goal is to measure the nanoparticle concentrations to which operators may be exposed

We focused on the most common filaments: ABS, PLA, PETG. In your opinion, which one is the most emissive? Find the answer in the study.

How effective is the P3D filter on toxic emissions?

In addition to our previous article:

“Emissions, dangers and Solutions! ” .Toxic and harmful to health emissions are produced by 3D printing. So we tested our P3D filter. The various measurements conducted, with and without filtration, reveal that our filtration system drastically reduces exposure to the toxic emissions generated by 3D printers

We confirmed the very high efficiency of the P3D filter, which is close to a minimum rate of 97.36%.To protect yourself from these nanoparticle emissions and to limit the risks, it is highly recommended that you use a tested and certified HEPA13 filter during FDM 3D printing.

Why is it important to use a tested and certified filter to limit the risks of toxic emissions?

The HEPA13 designation is not enough to guarantee your safety. Filters with EN1822 certification protect against particles around 300 nanometers. However, the majority of particles emitted during 3D filament printing are found mainly between 10 and 100 nm. Additionally to the certificate, filters really have to be tested under 300 nm.
To conduct our measurement campaign, we used an ENVY CPC-100 nanoparticle sensor from Palas. This meter measures particles down to 7 nm with a precision of 5%

Have you ever wondered which filament is the most emissive? We were surprised to see how many nanoparticles it emits! Discover the answer in our study!

This study, made in 2021, is the first that we share with the general public. As a part of our efforts to raise operators’ awareness of the risks associated with nanoparticle emissions, we will continue our research and share our results and recommendations.